when setting up roadblocks I noticed some place to improve, looking forward for your opinions.

Right now, if I want to set up a roadblock left of my car for example, I type
!roadblock+ 4 OR !rb 4

If the position however was incorrect and I want to adjust it to number one (bottom left of my car) I have to do the following
1) !roadblock- AND
2) !roadblock+ 1 or !rb 1
...otherwise "You already have a roadblock" comes up.

Suggestion:
When having an active roadblock and you set up a different one, the one before gets removed automatically (just the position gets changed)

So basically you're supposed to be able to do it without !roadblock-
1) !rb 4 (Roadblock appears left of your car)
2) !rb 1 (Roadblock position changes)

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Also, afaik there's no short command for !roadblock-, maybe we can introduce !rb- just like !rb+ 4

Well, if you have the brain power to place it in the right place the first time you shouldn't need it, not to mention it is only one extra command to change the position of it. It wouldn't be bad if it was implemented but it isn't really needed...

The scene might change, requiring a different roadblock position. It's probably OTT calling it lack of brain power lol. And a suggestion doesn't have to always be needed. Why not implement something that makes life easier, especially when it's something quite simple like this.